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+clc;
+clear;
+close;
+//pagec no 113
+//Figure 4.20
+//Noninverting Amplifier
+Rf=10*10^3;          //In Ohm(Assumption)
+//Channel 1
+Ri1=4*10^3;          //In Ohm(Assumption)
+Vi1=1;      //In Volt
+Av1=-Rf/Ri1;
+Vo1=Av1*Vi1;
+disp("V",Vo1,"Vout1");
+//Channel 2
+Ri2=2*10^3;          //In Ohm(Assumption)
+Vi2=-2;      //In Volt
+Av2=-Rf/Ri2;
+Vo2=Av2*Vi2;
+disp("V",Vo2,"Vout2");
+//Channel 3
+Ri3=1*10^3;          //In Ohm(Assumption)
+Vi3=0.5;      //In Volt
+Av3=-Rf/Ri3;
+Vo3=Av3*Vi3;
+disp("V",Vo3,"Vout1")
+disp("V",Vo1+Vo2+Vo3,"Total output via summation  is ")